| 4501 | Tim Brookover | | Oil & Gas Operator | Dec 2005 |
| 4502 | Time Energy, L.L.C. | | Oil & Gas Operator | Nov 2020 |
| 4503 | Tipco | Shreveport, LA 71104-3047 | Oil & Gas Operator | May 1988 |
| 4504 | Tipco Operating Co. | Marshall, TX 75671 | Oil & Gas Operator | Apr 2024 |
| 4505 | Tipperary Oil & Gas Corp | Denver, CO 80202 | Oil & Gas Operator | May 2014 |
| 4506 | Titan Oil Corp. | | Oil & Gas Operator | Jan 2024 |
| 4507 | Tma Production, LLC | | Oil Operator | Nov 2023 |
| 4508 | TMR Exploration, Inc. | Bossier City, LA 71171 | Oil & Gas Operator | Apr 2024 |
| 4509 | TNC Energy, LLC | Lubbock, TX 79401 | Oil & Gas Operator | Nov 2016 |
| 4510 | Toc, Inc. (TN) | | Oil Operator | Apr 1995 |
| 4511 | Toce Energy, L.L.C. | | Oil & Gas Operator | Dec 2017 |
| 4512 | Toce Oil Company | | Oil & Gas Operator | Dec 2014 |
| 4513 | Todd Bertolet | | Gas Operator | Apr 1999 |
| 4514 | Todd Oil Corp. Of La. Inc. | | Oil & Gas Operator | Jul 2000 |
| 4515 | Todd Oil Production Co | | Oil Operator | Aug 2001 |
| 4516 | Tola Production Company | Dallas, TX 75367 | Oil & Gas Operator | Apr 2024 |
| 4517 | Tolar Corporation | | Oil & Gas Operator | Sep 1999 |
| 4518 | Tolar Energy, L.L.C. | | Oil & Gas Operator | Dec 2001 |
| 4519 | Tolbert & Associates | | Oil Operator | Dec 2023 |
| 4520 | Tolbert Et Al | | Oil Operator | Jun 2000 |
| 4521 | Tolbert Well Service | | Oil Operator | Jan 2024 |
| 4522 | Toledo Bend Well Service | | Oil Operator | Aug 2000 |
| 4523 | Tom Brown Inc | Denver, CO 80202 | Oil & Gas Operator | Dec 2004 |
| 4524 | Tom Littlepage Oil Properties | | Oil & Gas Operator | Dec 1984 |
| 4525 | Tom Moore Trustee | | Oil Operator | Apr 1986 |
| 4526 | Tom West | | Oil & Gas Operator | Nov 1989 |
| 4527 | Tomlinson Oil Co. Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Jun 2023 |
| 4528 | Tommy A. Paul | | Oil Operator | Oct 2020 |
| 4529 | Tommy Joe Jenny | | Gas Operator | Dec 2023 |
| 4530 | Topaz Oil Company | Diboll, TX 75941 | Oil & Gas Operator | Apr 1994 |
| 4531 | Torch Energy Services, Inc. | Houston, TX 77010 | Oil & Gas Operator | Sep 2011 |
| 4532 | Torch Oil & Gas Company | Houston, TX 77010 | Oil & Gas Operator | Aug 1997 |
| 4533 | Torch Operating Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 4534 | Torch Opr Co-Stone Petr Corp | | Oil & Gas Operator | Jul 1997 |
| 4535 | Torrid Energy Company | | Oil & Gas Operator | Jun 1988 |
| 4536 | Tortuga Operating Company | Houston, TX 77055 | Oil & Gas Operator | Apr 2024 |
| 4537 | Total E&P USA, Inc. | Houston, TX 77210 | Oil & Gas Operator | Nov 2011 |
| 4538 | Total Minatome Corporation | Houston, TX 77210 | Oil & Gas Operator | Dec 1998 |
| 4539 | Totalfinaelf E&P USA Inc | Houston, TX 77024 | Oil & Gas Operator | Jul 2007 |
| 4540 | Touchstone Properties, Inc. | | Oil Operator | Mar 1988 |
| 4541 | Trace Operators, Inc. | | Oil & Gas Operator | Nov 2023 |
| 4542 | Tracer Energy, Inc. | Graham, TX 76450 | Oil & Gas Operator | Nov 1998 |
| 4543 | Trade & Development Corp | | Oil & Gas Operator | Nov 1996 |
| 4544 | Tradestar Energy, Inc. | Hot Springs, AR 71913 | Oil Operator | Feb 2021 |
| 4545 | Tradition Resources Oper, LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2017 |
| 4546 | Trafalgar House Oil & Gas Inc. | Houston, TX 77002-7346 | Oil & Gas Operator | Jan 1992 |
| 4547 | Traillour Oil Co. | | Oil & Gas Operator | Mar 1990 |
| 4548 | Trans Ocean Oil, Inc. | Houston, TX 77252 | Oil & Gas Operator | Oct 1980 |
| 4549 | Trans-Gulf Petroleum Corp | | Oil & Gas Operator | Sep 1999 |
| 4550 | Trans-Pacific Oil & Gas Inc. | | Oil & Gas Operator | Mar 1982 |
| 4551 | Trans-Sabine Pipeline Corp | | Oil Operator | Mar 2009 |
| 4552 | Trans-Western Expl. Inc. | Dallas, TX 75240 | Oil & Gas Operator | Mar 1993 |
| 4553 | Transamerican Energy/Toce Oil | | Oil & Gas Operator | Dec 1994 |
| 4554 | Transamerican-Swepi-Toce Oil | | Oil & Gas Operator | Apr 1990 |
| 4555 | Transco Exploration Company | | Oil & Gas Operator | Jul 1989 |
| 4556 | Transcontinental Gas P/L Corp. | | Oil & Gas Operator | Dec 2009 |
| 4557 | Transcontinental Gas Pipeline Co LLC | | Oil Operator | Jan 2024 |
| 4558 | Transcontinental Oil Corp. | | Oil & Gas Operator | Sep 1985 |
| 4559 | Transfuel Resources Co | Houston, TX 77215 | Oil & Gas Operator | Aug 2013 |
| 4560 | Transtexas Gas Corporation | Houston, TX 77265 | Oil & Gas Operator | Aug 2005 |
| 4561 | Transworld Expl. & Prod., Inc. | | Oil & Gas Operator | Mar 2004 |
| 4562 | Traver Oil & Gas Corporation | | Oil & Gas Operator | Sep 2000 |
| 4563 | Traver Oil Company | | Oil & Gas Operator | Sep 2000 |
| 4564 | Traver-Patterson Petroleum Inc | | Oil & Gas Operator | Apr 1990 |
| 4565 | Travis E. Duren | | Oil Operator | Jul 1995 |
| 4566 | Trebole Operating Company | | Oil Operator | Jul 1979 |
| 4567 | Tredegar Properties, Inc. | | Oil Operator | Jun 1990 |
| 4568 | Trek Resources, Inc. | Dallas, TX 75207 | Oil & Gas Operator | Apr 2024 |
| 4569 | Trendsetter Production Co, Inc | | Oil & Gas Operator | Jul 2008 |
| 4570 | Tri Investment Company | | Oil Operator | Mar 1980 |
| 4571 | Tri-C Resources, Inc. | Houston, TX 77024 | Oil & Gas Operator | Aug 2009 |
| 4572 | Tri-C Resources, LLC | Houston, TX 77024 | Oil & Gas Operator | Apr 2024 |
| 4573 | Tri-Par Exploration, Inc. | | Oil Operator | Oct 2001 |
| 4574 | Tri-Production Company | | Oil Operator | Apr 1994 |
| 4575 | Tri-State Exploration & Prod Inc | Marshall, TX 75671 | Oil & Gas Operator | Aug 2003 |
| 4576 | Tri-State Sales & Production | Rodessa, LA 71069 | Oil & Gas Operator | Dec 2008 |
| 4577 | Tri-Union Development Corp. | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 4578 | Triad Energy Corp. Of Texas | Houston, TX 77057-2696 | Oil & Gas Operator | Sep 2014 |
| 4579 | Triad Resources Inc | Spring, TX 77389 | Oil & Gas Operator | Dec 2020 |
| 4580 | Triangle Oil & G G Cornwell | | Oil & Gas Operator | Nov 1981 |
| 4581 | Triangle Oil Of Hosston | | Oil Operator | Jul 2014 |
| 4582 | Triangle Oil Producers, Inc. | | Oil & Gas Operator | Jun 1998 |
| 4583 | Tribal Oil Company | | Oil & Gas Operator | Dec 1981 |
| 4584 | Tricentrol Resources Inc | Englewood, CO 80111 | Oil & Gas Operator | Jun 1984 |
| 4585 | Trich Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jan 2024 |
| 4586 | Trichel Contracting Company | | Oil & Gas Operator | Sep 1987 |
| 4587 | Trickle Down Oil, Inc. | | Oil & Gas Operator | Feb 2016 |
| 4588 | Trico Energy Corporation | | Oil Operator | May 1984 |
| 4589 | Trico Oil & Gas Inc. | Kilgore, TX 75662 | Oil & Gas Operator | Apr 2024 |
| 4590 | Trident Oil And Gas Corp. | | Oil & Gas Operator | Sep 2000 |
| 4591 | Trigon Exploration, Inc. | | Oil & Gas Operator | Jan 1999 |
| 4592 | Trinidad Petroleum Corporation | | Oil & Gas Operator | Apr 1990 |
| 4593 | Trinity Operating (Usg), LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 4594 | Trinity Resources, Inc. | Houston, TX 77277 | Oil & Gas Operator | May 2020 |
| 4595 | Trinity River Energy Oper, LLC | Houston, TX 77008 | Oil & Gas Operator | May 2018 |
| 4596 | Triple J Investments Inc | Longview, TX 75606 | Oil & Gas Operator | Feb 2023 |
| 4597 | Triple J Oil Co. | Pampa, TX 79065 | Oil & Gas Operator | Aug 1996 |
| 4598 | Triple L Oil Company | Corpus Chrsti, TX 78469 | Oil & Gas Operator | Jan 1998 |
| 4599 | Triple L Operating Company LLC | Shreveport, LA 71106 | Oil Operator | Apr 2024 |
| 4600 | Triple S Oil Company | | Oil & Gas Operator | Feb 1979 |